Everyone pretty much covered it already. Structure, past experience and knowledge of the lake, etc.
* Fish close to the bottom.
-Start 6"-8" off the bottom.
* Drill a bunch of holes.
-I usually start with a straight line toward known structure like a drop off
and keep the holes about an auger length apart (you'll get a good idea
what the contour is like, kinds like playing battleship
).
* Use an eye from the first fish you catch.
-change it to a fresh one every once in a while unless the action
is fast and furious.
* Move often.
-If you don't get a bite in a minute or two go to the next hole.
-When you get on the fish stay at the hole until the bite stops and
then repeat above until you find them again.
-Obviously go back to all the holes you've drilled, the fish will move
around and you'll notice some produce consistently more than others.